# Mental Ability (NCO- Cyber Olympiad (SOF) Class 5): Questions 15 - 21 of 257

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## Question number: 15

» Mental Ability » Basic Arithmetic

MCQ▾

### Question

Which of the following expression below is true?

### Choices

Choice (4) Response

a.

b.

c.

d.

2 × (9 + 4) = 7 × (2 × 4)

## Question number: 16

» Mental Ability » Basic Arithmetic

MCQ▾

### Question

5 Mins + 25 secs = ________

### Choices

Choice (4) Response

a.

3 mins 65 secs

b.

6 mins 95 secs

c.

3 mins 50 secs

d.

4 mins 85 secs

## Question number: 17

» Mental Ability » Basic Arithmetic

MCQ▾

### Question

A Chair was bought for Rs. 1000 and sold for Rs. 900. Then the loss percent is

### Choices

Choice (4) Response

a.

15%

b.

5%

c.

12%

d.

10%

## Question number: 18

» Mental Ability » Basic Arithmetic

MCQ▾

### Question

The smallest four digit number that can be formed using 5,6, 1, and 0 is ________.

### Choices

Choice (4) Response

a.

5610

b.

1056

c.

6510

d.

6501

## Question number: 19

» Mental Ability » Basic Arithmetic

MCQ▾

### Question

8 km 100 m equals ________.

### Choices

Choice (4) Response

a.

8.1 km

b.

508.0km

c.

0.5080km

d.

5.08 km

## Question number: 20

» Mental Ability » Basic Geometry

MCQ▾

### Question

Which of the following are supplementary angles?

### Choices

Choice (4) Response

a.

180,180

b.

40,50

c.

90,90

d.

80,140

## Question number: 21

» Mental Ability » Basic Arithmetic

MCQ▾

### Question

Gita is mailing 3 books to her cousin. Each book is 7 inches long and 4 inches wide. She will mail the books together in 1 box. She wants to determine the size of the box she needs to mail the books. What information does she need?

### Choices

Choice (4) Response

a.

The number of pages in each book

b.

The thickness of each book

c.

The weight of the books.

d.

The distance the books will be sent

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